Fluid-pressure liquid-pumping device



"Get. 16,1923.

w. J. HANCOCK FLUID PRESSURE LIQUID PUMPING DEVICE Filed Feb. 21, 1922 ATTORNEYS? Patented Oct. 16, .1923.

WILLIAM JAMES HANCOCK, OF IDAHO SPRINGS, COLORADO.

FLUID-PRESSURE LIQUID-PUMPING DEVICE.

Application filed February 21, 1922'. Serial No. 588,331.

To all whom'it may concern: 1

Be it known that I, WILL AM JAMns HAN- cooK, a citizen of the United States, and a resident of Idaho Springs, in the county of Clear Creek and State of Colorado, have invented a new and Improved Fluid-Pres sure, Liquid-Pumping Device, of which the following is a full, clear, and exact descrip- 1 tion.

This inventionrelates to fluid pressure liquid pumping devices primarily designed for use in pumping water out of! mines or the like. i v I .The general object of the invention is the provision of a pumping means for utilizing a compressed fluid to raise liquid from one level to another.

A further object is the provision of pumping means for utilizing compressed fluids for raisin liquid, the operation of which is substantia 1y automatic.

These objects are accomplished by providing'a pressure tank that may be submerged in liquid to be pumped, and connecting thereto discharge means, and providing in conjunction with the pressure tank and discharge means vali e means for controlling the flow of the liquid, and associating with the pressure tank and discharge means, means for conveying compressed fluids thereto and introducing means controlled by the pressure in the discharge means for op erating the valve means to alternately sup ply pressure to the pressure tank and dis charge means, to force the liquid upward and to release, the pressure in the pressure tank when compressed fluid is being supplied to the discharge means.

These and other objects of the invention will be more clearly understood from the following detailed description and accompanying drawings.

Figure 1 is an elevational view of the pumping mechanism constructed in accordance with an embodiment of my invention, showing the pressure chamber connected with a source of compressed fluid;

' Figure 2 is an elevational view of the pumping mechanism constructed in accordance with an embodiment of my invention showing the discharge pipe .connected with a source of compressed fluid and the pressure chamber opened to the atmosphere.

Referring to the above-mentioned drawings, a pressure tank 10 is shown submerged in a liquid 11. A T-pipe 12projects through an opening 13 in the lower'end of the pressure tank 10 and has a check valve 14 attached to the other end opposite the pres sure tank. Connected to the lateral opening of the T-pipe is a discharge pipe 15. Another check valve 16 is placed in the discharge pipe 15 and serves to prevent a return liquid flow through the same.

A pipe 17, which may be connected with.

any source. of compressed air or the like,

projects through the wall of a cylinder 18 into a chamber 19. The manually operated valve 20 is positioned in the; pipe 17 to serve as a means for shutting off the compressed air. Two pipes 21 and 22 lead from the chamber 19 to the pressure tank 10 and discharge pipe 15, at a point above the check valve 16, respectively. Mounted in alinement with the cylinder 18 is a second cylinder 24 and interposed between the cylinders is a packing box 25. Slidably mounted in a bearing in the packing box is a connecting rod 26, attached to one end of which is a piston27 that is slidably mounted in the cylinder 24 and to the other end of the valve 28 slidably mounted in the chamber 19. The valve 28 has a groove 29 formed in its lower face and of a length suflicientto seat over the pipes 21 and 23 when the valve is in its lower position so as to establish communication between the two pipes. When the valve 28 is in its upper position communication is established between the pipes 17 and 21 and the pipe 22 is closed. The cylinder 24 has two openings 30 and 31 extending through its wall, the opening 31 being positioned at the top while the opening 30 enters the cylinder chamber at the bottom.

A disk 38 having trunnions 37 is mounted in the casing 32, the trunnions 37 being journaled in the walls of the casing. An arm 34 is attached to the disk 38 and exten-ds through a slot 33 cut in the end oil the casing. This arm'34 has a weight 35 slidably mounted thereon so that it may be positioned at any point on the arm outside of the casing 22. A cylinder 39 open at one end is supported from the casing 32 and has slidably mounted therein a piston 40.

This piston 40 is connected by means of a. I

' the valve is at one end of its strokeit establishes communication between theopenings 46 and 47, and whenat the other end of a stroke communication is established between the openings 47 and 48. The valve. 49 is operated by the disk 38 through the connecting links 51 and 52 which are hingedly.

connected together at 53. Two pipes. 54 and 55, each having' manually operated valves 56 associated therewith for closing them, connect the openings 46 and 48 in the cylinder 36 with the openings 31 and in the cylinder 24, respectively. A pipe 57 projects through the wall of the cylinder 36 and connects the pipe 17, leading from the source of compressed air, with the cylinder. In order to control the flow through the pipe 57 a manually operated valve 58 is provided in conjunction with the same.

When the tank 10 is submerged in the liquid to be pumped, as shown in the figures, the liquid 11 passes through the check valve 14 into the tank 10, compressing the air that is containedtherein. Then to prepare the remainder of the mechanism for operation the manually operated valves 56, 58 and 20 are opened. Compressed air passes down through the pipe 17, chamber 19, pipe 21 into the pressure tank 10, forcing the liquid out of the tank and up through the discharge pipe 15, the check valve 16 serving to prevent the liquid from flowing back through the discharge pipe intothe tank when the pressure in the pressure tank is released. When the compressed air is flowing into the pressure tank 10 the valve 28 is in its upward position and is retained there by means of the compressed air flowing through pipe 57, cylinder 36 and pipe 55 into the cylinder 24. After the liquid has been raised to a certain height in the discharge pipe 15 there is a certain pressure exerted through the pipe 45 on the piston 40. When this pressure. is greater than the weight exerted on the piston by means of the arm and weight the latter is raised to rotate the disk 38 and drawing the valve 49 to the right, establishing communication between the pipe 55 and the opening 47 and allowing a certain amount.-

of compressed air flowing through pipe 17 to flow through:pipe 57, pipe'54, opening 31 into the upper end of the cylinder 24. This forces'the piston 27 and the valve 28 downward, the air in the cylinder 24 escaping through the opening 30, ipe 55, and the opening 47. Communication is now established between the'pipes 21 and 23 through the groove 29 in the valve 28, allowing the compressed air in the chamber 19 to pass through the pipe 22 into the discharge pipe 15 above the check valve 16. The pressure in the pressure tank 10 is thus released and falls to atmospheric. The liquid 11 again flows through the check valve 14 into the pressure tank 10. The liquid in the discharge pipe 15 forms a piston and is forced upward by means of the compressed air passing through the pipe 22. As the liqu1d in the discharge pipe is'forced out of the same by the compressed air, the pressure in the discharge pipe begins to decrease. When the pressure in the discharge pipe decreases, the force exerted on the piston by the arm 34 and the weight 35 forces it downward and rotates the disk 38. The rotation of disk 38 to the right, as seen in Figure 1, moves the valve 49 to the left, establishing communication between the pipe 54 and the opening 47 and between the-pipe 55 and the pipe 57. Compressed air now flows through pipe 57, pipe 55, opening 30, forcing the piston 27 upward, the compressed air above the piston escaping through the pipe 54 and opening 47. The valve 28 moves upward with the piston 27, closing the pipe 22 and establishing communication between the pipes 17 and 21. Compressed air again flows into the pressure tank 10, forcing water out of the same and up through the discharge pipe 15, and this operation is continually repeated as long as the compressed air continues to flow through the pipe 17.

I would state in conclusion that while the illustrated example constitutes a practical embodiment of my invention I do not limit myself strictly to the exact details herein illustrated since manifestly the same can be considerably varied without departing from the spirit of the invention as defined in the appended claims.

Claims:

1. In a pumping device operated by a compressed fluid, a pressure chamber, a discharge pipe connected with the pressure chamber, valve means for controlling the liquid flow associated with said pressure chamber and discharge pipe, and automatically controlled means for alternately directing the compressed fluid into the pressure chamber and discharge pipe to give the pumping action.

2. A pumping device of the character described operated by a compres ed fluid, comprising a pressure chamber, a discharge pipe connected with the pressure chamber, valve means for controlling the liquid flow associated with the pressure chamber and discharge pipe, and means controlled by the change in the pressure in the discharge pipe pipe for allowing liquid to pass into the. pressure chamber and compelling the flowof liquid from the pressure chamber through the discharge pipe upon the increase of pressure in the ressure chamber, and automatically contro led means for alternately directing compressed fluid into the pressure chamber and discharge pipe to give the pumping action.

4. In combination with a.source of compressed fluid, a fluid pressure liquid pumping device of the class described, comprising a pressure chamber, a discharge pipe connected to the pressure chamber, valve means associated with the pressure chamber and discharge pipe for controlling the direction of flow of the li uid and maintaining the liquid at any heig t in the discharge pipe to which it maybe raised, means for conveying the compressed fluid to the pressure chamber and to the discharge pipe at a point above the discharge pipe check valve, means for conveying the compressed fluid from the pressure chamber to the atmosphere, valve means controlling the conveying means to alternately supply the fluid pressure to the pressure chamber and the discharge pipe and to release the pressure in the pressure chamber when the pressure is being supplied to the discharge pipe, and means associatedwith said valve means controlled by the liquid pressure in the discharge pipe to operate said valve means.

5. In combination with a source of fluid pressure, a fluid pressure liquid pumping device of the class described comprising a pressure chamber that may be immersed in the liquid to be pumped, valve means for controlling the flow of liquid from the pressure chamber, a discharge pi e connected to the pressure chamber, a chec valve located in the discharge ipe for preventing the return flow of liqu1d therethrough, means for connecting the source of fluid pressure to the pressure chamber and the discharge pipe above the check valve, and means for connecting the pressure chamber to the atmosphere, valve means for controlling the connecting means to alternately connect the source of fluid pressure to the pressure.

chamber and the discharge pipe and for releasing the pressure in the pressure chamber when the source of fluid pressure is connected to the discharge pipe, means for operating said valve, and means controlled by the pressure in the discharge pipe for con trolling the operation of said valve operating means.

6. A fluid pressure liquid pumping device for utilizing a compressed fluid to give the pumping action comprising a pressure chamber, a discharge pipe connected to said pressure chamber, means for directing the liquid flow from the pressure chamber into the discharge pipe, means mounted in the discharge pipe for allowing liquid to flow only in one direction in said discharge pipe, and automatically controlled means for alternately directing the compressed fluid into the pressure chamber and the discharge pipe to give the pumping action.

7. In combination with a source of compressed fluid, a fluid pressure liquid pumping device of the class described, comprising a pressure tank for immersing in the liquid to be pumped, a check valveassociated with the pressure tank for controlling the direction of the liquid flow, a discharge pipe connected to the pressure tank and a check valve located in the discharge pipe for preventing the return flow of liquid therethrough, means for conveying the compressed fluid from the source of compressed fluid-to the pressure tank and to the discharge pipe above the check valve, means for releasing the pressure in the pressure tank, valve means associated with the compressed fluid conveying means and the releasing means to alternately operate the tank conveying means and the discharge pipe con-- veying means and to operate thetank pressure releasing means when the discharge pipe compressed fluid conveying means is in operation, a piston associated with said valve means, means for utilizing the compressed fluid to operate said piston, and means controlled by the pressure in the discharge pipe above the check valve for operating said compressed fluid. utilizing means.

WILLIAM JAMES HANCOCK. 

